Ukraine keeps crossing Russia’s red lines. Putin keeps blinking.

Ukraine’s resistance to Russia’s invasion keeps crossing President Vladimir Putin’s red lines.

Kyiv’s lightning incursion into Kursk in western Russia this month slashed through the reddest line of all — a direct ground assault on Russia — yet Putin’s response has so far been strikingly passive and muted, in sharp contrast to his rhetoric earlier in the war.

On day one of the invasion in February 2022, Putin warned that any country that stood in Russia’s way would face consequences “such as you have never seen in your entire history,” a threat that seemed directed at countries that might arm Ukraine.

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